PatchTheCVECVE-2026-30623: LiteLLM 1.18.10 contains a remote code execution vulnerability in its MCP server creation functionality
CVE-2026-30623 is a critical-severity flaw (CVSS 9.8) affecting affected software. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.
LiteLLM 1.18.10 contains a remote code execution vulnerability in its MCP server creation functionality. The application allows users to add MCP servers via a JSON configuration specifying arbitrary command and args values. LiteLLM executes these values on the host without validation, enabling attackers to run arbitrary operating system commands. Successful exploitation may result in remote code execution with the privileges of the LiteLLM proces
Why this priority
- Critical severity
- EPSS top 8%: very likely to be exploited
- CISA SSVC: automatable with total technical impact
- Remotely exploitable, no login, no user action
A fixed release or distro patch exists.
Risk facts
| CVSS score | 9.8 (Critical) |
| Attack vector | Network (remote) |
| Attack complexity | Low |
| Privileges needed | None |
| User interaction | None |
| EPSS exploit chance | 5.0% (top 8%) |
| CISA exploited list | No |
| Weakness | CWE-77 |
| Published | 2026-07-15 |
| Last modified | 2026-07-16 |
Last updated 2026-07-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score
Timeline
- Published CVE record published
- Updated Record last modified
Exact fixes by distribution
Public exploits and detection
Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.
- GitHub PoC: csinexus/mcpshield (0 stars)
- Nuclei scan template: LiteLLM 1.18.10 - Command Injection
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.
Quick answers
How do I fix CVE-2026-30623?
No fixed release is listed yet. Watch the vendor advisory and apply any mitigation shown on this page.
Is CVE-2026-30623 being exploited?
CVE-2026-30623 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.
What does CVE-2026-30623 affect?
CVE-2026-30623 affects affected software. Severity is critical (CVSS 9.8). LiteLLM 1.18.10 contains a remote code execution vulnerability in its MCP server creation functionality. The application allows users to add MCP servers via a JSON configuration specifying arbitrary command and args values. LiteLLM executes
How urgent is CVE-2026-30623?
Priority 65/100. Critical severity; EPSS top 8%: very likely to be exploited; CISA SSVC: automatable with total technical impact; Remotely exploitable, no login, no user action